Prod. 



754 



vania, Lycoming Co, Linden, found by Sherwood in the iron 

 ore led at the top of the Chemung. Specimens 891~-lc, 891-7, 

 (000, p. 249).— F//7^. 



Productella speciosa, {Productus speciosus. Hall. 10th 



V/// s^ 4. 



tlctll.FcilM.V, 



Vol.iv.riMv, 



Regent's Kept. 1857, Chemung,) Hall, Pal., N. Y., Vol. 4, 

 page 175, plate 25, figs. 1 to 10. Eesembles P. lachrymosa^ but 

 the spine-bearing tubercles are smaller, nearer together and 

 more numerous, and the ventral beak is narrower, and more 

 abruptly sharpened ; dorsal valve inside studded witfi tuber- 

 cles; etc. (See Hall's text.) It has been found in the Che- 

 mung of Chautauqua, Cattaraugus and Alleghany Co., N. Y. — 

 In Pennsylvania, Tioga county, one mile north of Mansfield? 

 Sherwood's spec. 858-2 contains it and P. exanthemata. Upper 

 Chemung, — C. E. Hall reports it in Carll's collections from the 

 same horizon in the Oil field. VIII g, 



Productella spinulicosta. {Productus spinulicostus. Hall, 



1857,10th Ann.Rt.) Pos- 



tr .,«^ -.-^i?^^ .,.^^ sibly the same as P, 



shumardiana of Iowa, 

 Hall, Pal. N. Y., page 

 160, plate 23, figs. 6, 7, 

 8. Found in the limy 

 beds of Marcellus shale^ 

 and in Hamilton shahs,, on the shores of Lake Erie, Cayuga 

 and Seneca lakes, N. Y. — In Pennsylvania, Perry county, Bar- 

 nett's mill, Claypole's spec. 5-120 (six) ; andDorran's narrows, 

 spec. 118-25 (two) ; from Hamilton upper shale. VIII c. 



Hfdl, FctL N^ y. Vol, fV, p. /60, pi die 23 



